Views: 16 Author: China Xicheng Publish Time: 2021-08-02 Origin: China Xicheng
Nowadays, the boards are indeed diverse, most people don't know how to choose, let alone pp board model specifications, and pp board product performance. If you need to use various sheets in your daily home life, you may wish to pay attention to the various types of specifications and approximate prices, product performance, etc. If you choose some products with poor performance, you may encounter many problems.
PP sheet model specifications?
There are many specifications of PP sheet, such as thickness and width, there are big differences. And it can also be divided into pure PP board or modified PP board.
Thickness: 1-15mm, the widest is 1500mm
Thickness: 15-30mm, the widest is 1300mm
Thickness: 30-60mm, the widest is 1100mm
Polypropylene (PP) board, (PP pure board, modified PP board, reinforced PP board, PP welding rod)
Pure PP board: low density, easy to weld and process, superior chemical resistance, heat resistance and impact resistance, non-toxic and odorless, it is currently one of the most environmentally friendly engineering plastics. The main colors are white, microcomputer color, other colors can also be customized according to customer requirements.
Modified PP board (calcium plastic board): good size stability, low price, rigidity, heat resistance, etc., are better than pure PP. The color is generally green, white, and beige. Mainly used to make PP water tanks, PP ducts, PP wet scrubbers and other environmental protection equipment products.
PP sheet product performance?
1. Glass fiber reinforced PP board (FRPP board): After 20% is reinforced by glass fiber, in addition to maintaining the original excellent performance, the strength and rigidity are doubled compared with PP, and it has good heat resistance and low temperature. Impact resistance, corrosion resistance and arc resistance, low shrinkage. Especially suitable for chemical fiber, chlor-alkali, petroleum, dyes, pesticides, food, medicine, light industry, metallurgy, sewage treatment and other fields.
2. Because homopolymer PP is very brittle when the temperature is higher than 0°C, many commercial PP materials are random copolymers with 1 to 4% ethylene or clamp copolymers with higher ethylene content. Copolymer PP material has lower thermal distortion temperature (100°C), low transparency, low gloss, low rigidity, but has stronger impact strength. The strength of PP increases with the increase of ethylene content.
3. The Vicat softening temperature of PP is 150℃. Due to the high crystallinity, the surface rigidity and scratch resistance of this material are very good. PP does not have the problem of environmental stress cracking. Usually, the PP is modified by adding glass fiber, metal additives or thermoplastic rubber. The flow rate MFR of PP ranges from 1 to 40. PP materials with low MFR have better impact resistance but lower elongation strength. For materials with the same MFR, the strength of the copolymer type is higher than that of the homopolymer type. Due to crystallization, the shrinkage rate of PP is quite high, generally 1.8 to 2.5%. And the direction uniformity of shrinkage is much better than that of PE-HD and other materials. Adding 30% of glass additives can reduce the shrinkage to 0.7%. Both homopolymer and copolymer PP materials have excellent moisture absorption, acid and alkali corrosion resistance, and solubility resistance. However, it has no resistance to aromatic hydrocar bons (such as benzene) solvents, chlorinated hydrocarbons (carbon tetrachloride) solvents, etc. PP does not have oxidation resistance at high temperatures like PE.
The relevant introduction above is the pp sheet model specifications and pp sheet product performance. If you can find the right material, it will often play a very good effect and reduce the problems of various sheets. But no matter what kind of material you choose, you still have to pay more attention to the materials of various brands and the performance of the products, etc. If you choose some inferior materials, you may not have particularly good results.